Proto J5540HL Deep Hand Socket 1-1/4 in 6-point 3/4 Drive

Product Description

The PROTO J5540HL is a deep hand socket designed for heavy-duty fastener work requiring extended reach. Built from alloy steel with a satin finish, it accepts a 3/4-inch drive and fits 1-1/4-inch fasteners. The 6-point contact geometry distributes torque evenly across the flats of hex fasteners, reducing the risk of rounding. At 3.5 inches overall length, this deep socket provides the clearance needed to reach recessed or stubbed fasteners in tight assemblies. It meets ASME B107.110-2012 standards. Mechanics, millwrights, pipefitters, and industrial service technicians working with larger fasteners will find this socket a reliable fit for ratchet and breaker bar applications.

The J5540HL is suited for industrial maintenance, heavy equipment service, and commercial mechanical applications where 1-1/4-inch fasteners appear on pumps, flanges, machinery mounts, and structural connections. The deep-length design handles bolt protrusion and recessed nut situations that standard-length sockets cannot reach. It is not tether-capable, making it appropriate for ground-level and bench work rather than overhead elevated applications where dropped-tool controls are required.

Key Features

• 6-point socket design grips fastener flats directly, reducing fastener damage under high torque
• Deep length at 3.5 inches overall provides reach for recessed fasteners and long bolt protrusion
• Alloy steel construction handles the torque loads associated with 3/4-inch drive tools
• Satin finish reduces glare and provides moderate corrosion resistance in shop environments
• Meets ASME B107.110-2012 standards for hand socket performance and dimensional conformance

Compatibility

Designed for use with 3/4-inch drive ratchets, breaker bars, and torque wrenches. Fits 1-1/4-inch hex fasteners in industrial and heavy mechanical service applications.

Installation Notes

Install and remove using a 3/4-inch drive ratchet, breaker bar, or torque wrench rated for the fastener specification. Ensure the socket is fully seated on the fastener before applying torque to prevent slippage. This socket is not tether-capable and should not be used in elevated work areas where dropped-tool prevention is required by site safety protocol. Inspect the socket for cracks or wear before use, and remove from service if deformation is observed.